:root{--bg: #0a0a0a;--surface: #1a1a1a;--surface2: #252525;--border: #333;--text: #e8e8e8;--text2: #888;--accent: #4f8cff;--accent2: #3a6fd8;--green: #34c759;--red: #ff453a;--orange: #ff9f0a;--radius: 12px;--safe-top: env(safe-area-inset-top, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px)}*{margin:0;padding:0;box-sizing:border-box}html,body{font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,Helvetica Neue,sans-serif;background:var(--bg);color:var(--text);font-size:16px;-webkit-font-smoothing:antialiased;overscroll-behavior:none;user-select:none;-webkit-user-select:none}body{padding-top:var(--safe-top);padding-bottom:var(--safe-bottom)}.app{display:flex;flex-direction:column;height:100dvh;max-width:500px;margin:0 auto;position:relative}.topbar{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;font-size:14px;color:var(--text2);border-bottom:1px solid 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12px;border-radius:12px;font-size:14px;line-height:1.5;word-break:break-word;white-space:pre-wrap}.chat-bubble-user{align-self:flex-end;background:var(--accent);color:#fff;border-bottom-right-radius:4px}.chat-bubble-ai{align-self:flex-start;background:var(--surface2);color:var(--text);border-bottom-left-radius:4px}.chat-typing{opacity:.6;font-style:italic}.chat-input-row{display:flex;gap:8px;padding:8px 16px 10px;flex-shrink:0}.chat-textarea{flex:1;background:var(--surface2);border:1px solid var(--border);border-radius:10px;color:var(--text);padding:10px 12px;font-size:15px;resize:none;font-family:inherit;max-height:80px}.btn-send{background:var(--accent);color:#fff;border:none;border-radius:10px;width:42px;font-size:18px;cursor:pointer;flex-shrink:0}.btn-send:disabled{opacity:.4}input:focus,textarea:focus,button:focus{outline:none}.trend-toggle{width:100%;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);color:var(--text2);font-size:13px;padding:10px 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10px}.trend-sparkline{margin-bottom:10px}.trend-spark-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2px}.trend-spark-label{font-size:11px;color:var(--text2)}.trend-spark-value{font-size:13px;font-weight:600}.trend-delta{font-size:11px;font-weight:500;margin-left:4px}.trend-delta-good{color:var(--green)}.trend-delta-bad{color:var(--red)}.trend-svg{width:100%;height:40px;display:block}.trend-spark-labels{display:flex;justify-content:space-between;font-size:9px;color:var(--text2);opacity:.6;padding:0 2px}@media(prefers-color-scheme:light){:root{--bg: #f5f5f7;--surface: #fff;--surface2: #f0f0f2;--border: #e0e0e0;--text: #1a1a1a;--text2: #666}}